CVE-2025-6638

HIGH

7.5

Description

A Regular Expression Denial of Service (ReDoS) vulnerability was discovered in the Hugging Face Transformers library, specifically affecting the MarianTokenizer's `remove_language_code()` method. This vulnerability is present in version 4.52.4 and has been fixed in version 4.53.0. The issue arises from inefficient regex processing, which can be exploited by crafted input strings containing malformed language code patterns, leading to excessive CPU consumption and potential denial of service.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published9/12/2025

Last Modified10/21/2025

Sourcenvd

Honeypot Sightings0

Affected Products

huggingface:transformers

Weaknesses (CWE)

CWE-1333

References

https://github.com/huggingface/transformers/commit/47c34fba5c303576560cb29767efb452ff12b8be(security@huntr.dev)

https://huntr.com/bounties/6a6c933f-9ce8-4ded-8b3b-2c1444c61f36(security@huntr.dev)

IOC Correlations

No correlations recorded

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